Scientist Luo Hui travels through time and inhabits the body of Empress Shen Huaqing—once despised for her obesity and perceived foolishness. Armed with a futuristic technology system, she successfully loses weight, outwits her enemies including the favored concubine Shang Rou and Princess Yuwen Changning, and gradually mends her relationship with Emperor Yuwen Changheng. She also rescues her twin children (a boy and a girl) who were manipulated by others. Through a series of incidents, she uses advanced technology to resolve crises and enrich the national treasury. After overcoming numerous storms, the emperor and empress unite to crush the conspiracy led by Shang Rou, her brother Shang Yi, and Prince Tuoba Ye of the Beidi tribe. Eventually, Emperor Yuwen Changheng disbands his harem, and Shen Huaqing—with her wisdom, technology, and charm—firmly secures her position as empress, ruling the realm with benevolence and dignity.
